baber/WOPTO huggingface dataset:
Patent GB-291324-A (GB)
Title: Improved ellipsograph
IPC: B43L11/04
Filed: 1928-01-23
Abstract: 291,324. G³nther, J., and Saupe, J. Jan. 23, 1928. No Patent granted (Sealing fee not paid). Ellipsographs.-The instrument, comprises a fixed vertical limb 1 having at least two prongs for fastening it to a drawing-surface and having towards its lower end a collar 3 on which rests a rotatable, sleeve 4. At its upper end the limb 1 extends beyond the sleeve 4 and carries a collar 5 provided with pins 6 extending through apertures in a templet 7 which is circular in plan at its upper end 8 while its lower end is in the form of a flat ellipse, Fig. 2. The templet 7 contains a compression spring 9 and can be adjusted along the limb 1 by a nut 10. A slide 14 on the sleeve 4 carries pivoted bearing 18 for a graduated limb 19 which at its upper end carries a guide 22 which is kept in engagement with the templet 7 by a spring 35. At its lower end the limb 19 is pivoted to a link 28 which is also pivoted to a support 24 slidably mounted on a rod 25 extending from a plate 12 on the sleeve. 4. The support 24 carries a pin 31 on which is resiliently mounted a drawing pen 29 or a tube containing marking liquid. By using other forms of templet, figures other than ellipses can be drawn.
Patent GB-1199904-A (GB)
Title: Improvements in and relating to Arresting the Temperature Rise of Electrical Machines Within a Narrow Working Range
IPC: H02K9/22
Filed: 1969-01-14
Abstract: 1,199,904. Cooling electrical machines. CONTRAVES A.G. 14 Jan., 1969 [2 Feb., 1968], No. 2139/69. Heading H2A. An electrical machine, e.g. an adjuster motor subject to temporary high loads, has its temperature rise arrested within a narrow range by utilizing the latent heat required for a change of phase of a solid fusable coolant 3 in at least one cavity 20 in at least one motor component e.g. the rotor 2 liable to heating, the melting point of the coolant being above a predetermined operational temperature and below a permissible maximum temperature of the motor. The coolant 3 may be a hydrocarbon, a solid paraffin, or an eicosan, and partly liquefies during the high loads and resolidifies during the low loads giving of its accumulated heat to the environment. Heat exchange is improved by cooling ribs 23, and the stator I has permanent magnets 12.
Patent GB-1137461-A (GB)
Title: Method for freeze-drying liquids and plant for carrying the method into effect
IPC: A23F5/32
Filed: 1967-01-16
Abstract: 1,137,461. Freeze drying process. ATLAS A.S. 16 Jan., 1967 [14 Jan, 1966], No. 2164/67. Heading F4G. [Also in Division A2] In apparatus for freeze drying a liquid, the liquid is pre-frozen and rendered porous or bubbly, e.g. by passing a gaseous medium thereinto, or by a vacuum effect, before being subjected to the normal freeze drying process.
Patent GB-1250044-A (GB)
Title: Improvements in or relating to metal ladders
Inventor: POWELL ROBERT ARTHUR
IPC: E06C7/08
Filed: 1969-01-15
Abstract: 1,250,044. Ladders. INDAL CANADA Ltd. 26 Nov., 1969 [15 Jan., 1969], No. 2334/69. Heading E1S. A metal ladder comprises a pair of metal channel section extrusions 10, 11 as stiles each formed with a series of D or box section continuous edged apertures and a series of tubular extrusions 13 as rungs, each formed with a pair of ribs 14 and having its ends deformed outwards by swaging over flanges defining the continuous edged apertures. In a modification the flange around the aperture is omitted, and in a further modification the aperture is formed in an indented portion of the web of the stile.
Patent GB-940063-A (GB)
Title: Improvements in or relating to the manufacture of thermionic cathodes
Inventor: HENDRIKS EVERARDUS HENDRICUS
IPC: B22F3/18
Filed: 1959-01-22
Abstract: 940,063. Cathode materials and processing. MULLARD Ltd. Oct. 30, 1959 [Jan. 22, 1959; July 13, 1959], Nos. 2416/59 and 23976/59. Heading H1D. In a method of manufacturing a thermionic cathode having a coating of a double or triple alkaline-earth metal carbonate on a nickel or nickel alloy support, a layer, one particle thick, of closely-spaced nickel particles is sintered to the support, the interstices between the particles are filled with carbonate and pressure is applied to cold-weld the nickel particles to the support and to deform them so that the compacted carbonate is retained in re-entrant cavities between the particles and in contact with the support. In a preferred method, a nickel or nickel alloy strip, containing reducing agents such as magnesium and aluminium, is first coated with an adhesive film either in a continuous strip or in circular or rectangular patches and carbonyl nickel particles about 10 microns in diameter are applied from a magnetic container to the adhesive film and sintered to the strip at 1100 ‹ C. in an atmosphere of 90% hydrogen and 10% nitrogen, the adhesive being removed completely during this process. Next, a triple alkaline earth carbonate, with a Ba: Sr: Ca ratio of 47 : 43 : 10 and which has been soft-sintered, after being precipitated by sodium carbonate, at 600‹ C. for 5 minutes into soft chalk-like sticks, is applied to the strip which is afterwards rubbed to ensure the application of carbonate in all the spaces between the nickel particles and to remove any excess carbonate. Finally, the strip is compressed at 60 tons/sq, inch, the carbonate and nickel particle layer then having a thickness of about 6¢ microns, and passed into a machine which divides up and forms the coated strip into tubular cathodes of rectangular or circular cross-section or cathodes of the type shown in Figs. 10 and 12, the cathode of Fig. 10 comprising two similar parts welded together. In an alternative method, instead of compressing the entire strip, the entire strip may be coated and only those portions which are required as emissive surfaces are compressed, e.g. by means of an appropriately shaped punch, the uncompressed portions of carbonate being removed by a blast of air. In a further embodiment the cathode supports are formed before the emissive coating is applied.
Patent GB-1133894-A (GB)
Title: An apparatus and a process for extruding a mortar containing a thermo-setting synthetic resin and a mineral filler
Inventor: KRAK HANS
IPC: E02B3/12
Filed: 1967-01-17
Abstract: 1,133,894. Screw-extrusion machines; laminates. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 17 Jan., 1967 [19 Jan., 1966], No. 2451/67. Headings B5A and B5N. [Also in Division E1] A mortar comprising a thermosetting synthetic resin and a mineral filler is extruded in rod or sheet form using a screw extruder whose screw has a compression ratio within the range 1 : 1À1 and 1 : 1À5 and wherein the crosssectional area of the die orifice is between 8 and 20% of the minimum cross-sectional area of the axial flow path between screw 11 and barrel 10. Compression ratio is defined as the ratio between the maximum and minimum volumes contained between adjacent turns of the screw flight and differs from unity by, e.g. having a core of increasing diameter, a barrel of decreasing diameter or a flight of decreasing pitch, the changes occurring in the downstream direction. As shown, the extrudate is deposited as adjacent strips on a substrate (not shown) by movement of the extruder, the strips adhering to the substrate and being acted upon by a roller 18 to smooth them into a uniform sheet. Alternatively rods may be extruded on to a substrate using an in-line die with again a mortar sheet being formed by rolling. Substrates specifically mentioned are the walls of tunnels or swimming pools or the surfaces of roads which may be completely coated in the manner above described. It is also mentioned that the extrudate in sheet form may be cut to form tiles. In a specific mortar composition an epoxy resin is mixed with fine-grained sand and quartz powder and an accelerator and polyamine resins as hardeners are also included. Such compositions may also contain colorants.
Patent GB-936796-A (GB)
Title: Improvements in disc brakes
Inventor: BUTLER HENRY JAMES
IPC: F16D55/228
Filed: 1959-01-23
Abstract: 936,796. Disc brakes. DUNLOP RUBBER CO. Ltd. Jan. 18, 1960 [Jan. 23, 1959], No. 2503/59. Class 103 (1). In a retraction device for a disc brake of the kind having angularly movable pressure plates 5 engageable with a disc 2, each pressure plate being secured by a pin 8 to a spindle 6 mounted in a non-rotatable calliper housing 1, a resilient and deformable arm 9, made of copper or brass, for example, has a hub portion 10 secured to one end of the spindle 6 and a crank end portion 9a located in a bore in the calliper housing 1 such that when the pads are moved towards the disc, pressure plates 5 pivot about the spindle axes and angularly move the spindles 6, this movement twisting the hubs 10 relative to the arms 9 to flex or deform the arms. When the force moving the pads is relaxed, the inherent resilience of the retraction devices returns the hubs 10 towards their initial positions and moves the spindles 6 angularly to take the pads away from the disc. As wear of the brake pads 5a secured to the pressure plates 5 takes place the arms of the retraction devices are bent or deformed as the angular movement of the pressure plates gradually increases. The inherent resilience of the arms is sufficient tc retract the pressure plates a predetermined distance away from the disc when the braking pressure is removed irrespective of the wear of the pads. When the pads are replaced by fresh and unworn pads, the retraction devices may be bent to restore them to their original shape so that the clearance between the pads and the disc is of the desired predetermined amount Alternatively the retraction devices may be replaced.
Patent GB-785550-A (GB)
Title: A typewriter including means for double letter space typing
IPC: B41J19/32
Filed: 1955-01-27
Abstract: 785,550. Typewriters. OLYMPIA WERKE AKT.-GES. Jan. 27, 1955 [Jan. 27, 1954], No. 2530/55. Class 100(4) In a typewriter provided with a key-lever 21, which, when held in its lower position, causes double-letter space typing to be effected, the key-lever action comprising a quadrilateral linkage (key-lever 21, link bar 23, link lever 24 and locking lever 25) wherein the lever 25 locks behind a key-lever guide 4 upon the first depression of the key-lever and is released on the second depression by the engagement of a lug 21b on keylever 21. The rightward locK- ing movement of the locking lever 25 is imparted by a pin 31 on the link lever 24 which by the key action is turned clockwise. At the same time, the lever 24 pulls a wire 20, pivots a lever 18, and raises an actuator 16, so that when a typeaction ocurrs and the universal bar 8 of the typewriter is operated, the actuator engages a fork 13a, pivots a shaft 12, and lifts a member 35 which adjusts the escapement mechanism for double letterspacing. A slotted connection 25a allows a certain play so that the lug 21b is able to move behind a bent portion 25c of the locking lever 25. When the second depression ocurrs the lug 21b presses down on the bent portion 25c, rotates the locking lever 25 until lug 21b and bent portion 25c are disengaged.
Patent GB-178571-A (GB)
Title: Improvements in and relating to electric motor control
IPC: H02P1/20
Filed: 1921-01-20
Abstract: 178,571. British Thomson - Houston Co., Ltd., and Hastings, H. C. Jan. 20, 1921. Automatic starters of the successive contactor type are provided with means for weakening a lock-out coil of a contactor step in advance of its operation. The object is to set the different contactors in readiness successively to close at definite values of current. The arrangement shown in Fig. 1 employs lock-out switches 3, 4 as described in Specification 131,490 having shuntconnected closing coils S3, S4 and series-connected lock-out coils M3, M4. The closure of a preceding contactor 2 in short-circuiting a portion of starting resistance R, also short-circuits a portion of the lock-out coil M3, so that the operating-coil S3 may close its contactor at the desired current value. The closure of the contactor 3 performs a similar function with regard to the contactor 4. The arrangement shown in Fig. 2 employs lock-out switches in which both the operating-coils and lock-out coils are shunt-connected. The lockout coils M2, M3, M4 are connected to different points of the starting-resistance so as to receive smaller proportions of current as the preceding contactors close.
Patent GB-394742-A (GB)
Title: Improvements in and relating to electric motors
IPC: H02K17/02
Filed: 1932-01-29
Abstract: 394,742. Alternating-current induction motors. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London, and McCONNACHIE, W., 133, Murray Road, Rugby. Jan. 29, 1932, No. 2749. [Class 35.] An asynchronous motor has two'secondary windings both associated with the same primary winding, one or both of the secondary windings being connected through slip-rings to a resistance and/or a reactance which is adjusted to suit the speed-torque characteristic of the motor to a desired dutv but which thereafter is maintained constant during both starting and running operations. One of the secondary windings may be of the squirrel-cage type and this may be either the inner or the outer winding. Specification 11931/05, [Class 35 Dynamo-electric generators &c.], is referred to.
Patent GB-954545-A (GB)
Title: Improvements relating to the manufacture of rectifiers of the selenium type
Inventor: GILBERT JOSEPH
IPC: H01L21/145
Filed: 1960-01-26
Abstract: 954,545. Selenium rectifiers. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd. Jan. 9, 1961 [Jan. 26, 1960], No. 2795/60. Heading H1K. A selenium rectifier is electroformed and the selenium annealed simultaneously while the rectifier is in a liquid boiling at 180‹ to 220‹ C., the temperature required for annealing. In an example a base plate of aluminium or steel coated with selenium is heated between 90 ‹ and 150‹ C. for ¢to 4 hours to partially crystallize the selenium. After spraying on a barrier layer and a counter electrode which may be a porous zinc cadmium layer the device is totally immersed in isophorone or trichlorobenzene, which is maintained at its boiling point while an electroforming unsmoothed rectified current of density 1 amp/cm.<SP>2</SP> at 60 volts is passed through the rectifier. Alternatively the forming current may be used to initially raise the liquid to and maintain it at its boiling point. The liquid may contain materials such as thallium which diffuse through the porous counter electrode during the treatment to assist in the forming process.
Patent GB-566029-A (GB)
Title: Improvements in power transmission mechanism
IPC: B63H25/28
Filed: 1943-02-19
Abstract: 566,029. Reverse gearing. HINDMARCH, T. Feb. 19, 1943, No. 2807. [Class 80 (ii)] Reverse gearing comprises an input shaft b and an output shaft c inclined to one another. Directly meshing gears d<1>, e<1> on the shafts give ahead driving, and gears d, e meshing with an idler gear give reverse driving. The gears e, e<1> are connected with their shaft by pressureoil operated couplings f, f<1>, the coupling f being within the gear e, and the coupling f<1> being aside of the gear e<1>. As shown, the gears e, e<1> are on a short shaft c<1> which is connected to the output shaft c by gears g. Specifications 382,865 and 438,563 are referred to in the Provisional Specification. Reference has been directed by the Comptroller to Specification 540,718.
Patent GB-547443-A (GB)
Title: Improvements in, or relating to, military land mines
IPC: F42C15/42
Filed: 1941-03-03
Abstract: 547,443. Land mines. CARR, J. B. March 3, 1941. No. 2809. [Class 9 (ii)] A land mine comprises a tube or set of tubes. containing high explosive and a metal plate laid over the tube or tubes and over or near to the surface of the ground. The plate E is internally connected to the tube A and may be welded thereto; the plate may be divided into several smaller plates, or may be flat or bent so that the tube is disposed beneath the ground or above the ground. The tube has one permanently closed end C and a removable end D apertured to receive wires from a firing station remote from the mine. The plate, when flat, may be covered with grouting G.
Patent GB-996086-A (GB)
Title: Improvements in and relating to position-sensitive apparatus
Inventor: WOLFENDALE CALEB FREDERICK
IPC: G05B19/33
Filed: 1963-01-23
Abstract: 996,086. Electric positional control systems. SOGENIQUE (ELECTRONICS) Ltd. Jan. 17, 1964 [Jan. 23, 1963], No. 2834/63. Heading G1N. A capacity transducer for measuring and controlling the position of a tool relative to a workpiece comprising a movable electrode and a number of fixed cooperating electrodes arranged in line, fed with a progressively increasing alternating voltage as described in Specification 935, 241 is modified by restricting the voltage difference to the two fixed electrodes adjacent the moving electrode, thereby increasing the sensitivity of the apparatus. As shown (Fig. 1) an A.C. voltage at terminals 12 is connected to a pair of fixed electrodes 10c, 10d from the series 10a to 10f, as selected by switches 11a to 11f. The potential on moving electrode 11 is indicative of its position with respect to fixed electrodes 10c, 10d, and is compared in an automatic balancing arrangement with the potential at a reference point 17. The potential distribution along the line of electrodes 10a to 10f is made uniform by auxiliary voltages from the secondary windings 19a to 19f of a transformer 19. Alternative switching arrangements are described. Specification 982, 674 also is referred to.
Patent GB-130419-A (GB)
Title: Improvements in or relating to the Arrangement of Fuel Tanks or Reservoirs aboard Motor Driven Vehicles, Flying Machines or the like.
Inventor: CAUDRON RENE
IPC: B64D37/12
Filed: 1918-02-19
Abstract: 130,419. Caudron, R. Nov. 2, 1917, [Convention date]. Tanks.-Fuel tanks for aeroplanes, vehicles, &c. are secured to their supports by locking-devices. The tank d is secured to the frame d<1> adapted to glide in guides provided in the carriers or beams b, so that the frame travels rearwards by preference. Hooks e<1>, normally engaging eyelets e &c. on the carriers or beams b, may hold the tank in position, and sliding rods f, with hooks f<1> engaging eyelets f<10> on the frame d', serve as the locking-gear. A hand-lever is provided to allow the hooks f<1> to be engaged with or disengaged from the eyelets f<10>. Elastic connexions i preferably pull the frame d<1> and tank rearwards. The rear of the car may terminate in a detachable slip cage adapted to surround the tank d. The arrangement may be used in conjunction with an arrangement for interrupting the connexions between the feed-pipes of the tank and the pipes leading to the engine &c.
Patent GB-489578-A (GB)
Title: Sheet metal and method of manufacture
IPC: B21B1/22
Filed: 1937-02-01
Abstract: In a method of treating hot-rolled low-carbon steel sheet or strip, particularly for making tin canisters, the metal is drastically cold rolled to a thickness within 5-25 per cent of the final thickness, is then heat treated at a temperature above the A3 point, i.e. at the temperature above which g -iron is formed, and then cold rolled to final thickness.  An ageing treatment may then be applied.  In one example hot-rolled steel strip 0,109" thickness is cold rolled to 0,008" and then passed through a continuous furnace, the temperature and speed of travel being arranged so that the strip is heated to about 1700 DEG  F., causing re-crystallization in about half a minute.  The strip passes from the furnace to a cooling table and a non-oxidizing atmosphere is maintained over the furnace and table. After cold rolling to 0,007" thickness the material, either in strip or sheared into sheets, is passed through a tin bath at a temperature of 500-600 DEG  F., which has an ageing effect, or this effect may be produced by heating to about 1200 DEG  F., without tinning, or may be omitted when very thin gauges are produced.  In another example strip 0,109" thick is cold rolled to 0,0105," heat treated at 1700 DEG  F., cold rolled to 0,009" and tinned at 600 DEG  F.
Patent GB-214743-A (GB)
Title: Improvements in electric couplings
IPC: H01R13/18
Filed: 1923-02-01
Abstract: 214,743. Shanahan, H. F. Feb. 1, 1923. Plug couplings.-A socket contact for a plug and socket coupling has a split tubular member 1 reinforced by a substantially U- shaped resilient member 8 with upwardly and inwardly extending arms embracing the split ends of the tubular member. Both may be rigidly fixed to the underside of a terminal block 3 by a screw 9. The resilient member may be laminated.
Patent GB-1085911-A (GB)
Title: Improvements in strap adjusters
Inventor: DADSON ALBERT JOHN STANDEN
IPC: A61F2/80
Filed: 1964-01-23
Abstract: 1,085,911. Artificial limbs. J. E. HANGER & CO. Ltd. Dec. 4, 1964 [Jan. 23, 1964], No. 2969/64. Heading A5R. [Also in Division E2] An adjuster for a tension holding strap of a prosthetic limb comprises a substantially parallel sided pin S and a carrier plate 10 fitted and secured to the pin in a rotatable manner such that bridges 11 thereon lie closely adjacent to the pin on each side thereof. The arrangement is such that when the strap is passed through the bridges 11 in a loop one of a series of holes 14 therein can be engaged with the pin and the strap is then maintained in engagement with the pin by the bridges 11. The carrier plate is secured to the pin by means of a circlip 12 and a base plate 4 which carries the pin is provided with holes 6 so that it can be secured to the limb by rivet pins 7. The pin protrudes from the underside of the base plate and engages a hole 2 in the limb to locate the plate accurately.
Patent GB-523185-A (GB)
Title: Manufacture of wet-strengthened paper products
IPC: D21H17/50
Filed: 1939-01-28
Abstract: 523,185. Paper containing artificial resins; urea-formaldehyde polymers. BROWN CO. Jan. 28, 1939, No. 2992. Convention date, Jan. 28, 1938. [Class 96] [Also in Group IV] Paper, which may be absorbent, for towels, handkerchiefs &c. or may be waxed for wrapping foodstuffs &c. is given wet-strength by incorporating into the paper-making pulp # to 10 per cent of heat-polymerizable resins or resinforming substances e.g. urea-formaldehyde, phenol formaldehyde, acrylate polymers, or polyvinyl esters, added as solutions, suspensions, or emulsions, in water, or organic liquids, and exposing the resin-containing sheet to a temperature of 450 to 550‹F. for 1 second or to a lower temperature e.g. 150 to 300‹F. for 5 minutes to 24 hours, to complete the polymerization of the resin. The finished sheet may then be rehumidified by spraying. In an example 1¢ per cent. of intermediate stage urea-formaldehyde polymer and 1 per cent. resin soap are added at the beater to bleached kraft pulp and paper made therefrom passed through paraffin wax at. 230‹F. The waterproofing bath may be at a temperature sufficient to polymerize the resin. An intermediate-stage urea formaldehyde polymer may be prepared by cooking 100 parts of urea with 120 of formaldehyde in 203 'of water and 27 or 28 per cent. ammonia water at 190 to 200‹F. until the viscosity has increased substantially and is rising rapidly. Specification 502,425 is referred to.
Patent GB-177312-A (GB)
Title: Improvements in and connected with fish-hooks
IPC: A01K83/06
Filed: 1921-01-24
Abstract: 177,312. Kramer, J. H. Jan. 24, 1921. Fish-hooks; live-bait tackle.-A fish-hook having a barbed stem is adapted to be inserted longi. tudinally into a small fish bait and through an eve in a link member which is inserted transversely into the back of the bait and which is connected to the line, the barb of the stem preventing disengagement of the link from the hook. In one form, a stem 2 of a hook 1 provided with an elongated barb, forming a bar 3, is passed through an eye 8 of a link 6, provided with a hole 7 for attaching a line, preferably inclined, projection 4 tending to secure the link in position after passing the eye 8 between the projection and the bar. The point 5 is of such a length as to prevent the eye 8 from passing over it. More than one hook may be provided.